The recommended PCB layout for optimal thermal performance involves placing a thermal pad on the bottom of the package, connecting it to a large copper area on the PCB, and using multiple vias to dissipate heat to the other layers. A minimum of 2oz copper thickness is recommended.
To ensure stable output voltage with varying input voltage, it is recommended to use a high-quality input capacitor with low ESR, and to decouple the output with a capacitor of at least 10uF. Additionally, the output voltage can be adjusted using the feedback resistors to compensate for input voltage variations.
The maximum ambient temperature for reliable operation of the AP2161DFMG-7 is 85°C, with a derating of 1.5mA per degree Celsius above 60°C. It is recommended to ensure good airflow and heat dissipation to maintain a safe operating temperature.
The AP2161DFMG-7 is a commercial-grade device and may not meet the requirements for high-reliability or automotive applications. It is recommended to use a device specifically designed for these applications, such as the AP2161QDFMG-7, which has undergone additional testing and qualification.
To protect the device from overvoltage and undervoltage conditions, it is recommended to use a voltage supervisor or a reset IC to monitor the input voltage and shut down the device if it exceeds the recommended operating range. Additionally, a TVS diode can be used to protect the device from voltage transients and spikes.
AP2161DFMG-7 datasheet
by Diodes Incorporated
